usb: ohci-at91: replace request_mem_region + ioremap by devm_ioremap_resource

Replace the request_mem_region + ioremap calls by the
devm_ioremap_resource call which does the same things but with device
managed resources.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 29d2093..a015327 100644 (file)
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -154,24 +154,17 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
        hcd->rsrc_start = pdev->resource[0].start;
        hcd->rsrc_len = resource_size(&pdev->resource[0]);
 
-       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
-               pr_debug("request_mem_region failed\n");
-               retval = -EBUSY;
-               goto err1;
-       }
-
-       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
-       if (!hcd->regs) {
-               pr_debug("ioremap failed\n");
-               retval = -EIO;
-               goto err2;
+       hcd->regs = devm_ioremap_resource(dev, res);
+       if (IS_ERR(hcd->regs)) {
+               retval = PTR_ERR(hcd->regs);
+               goto err;
        }
 
        iclk = clk_get(&pdev->dev, "ohci_clk");
        if (IS_ERR(iclk)) {
                dev_err(&pdev->dev, "failed to get ohci_clk\n");
                retval = PTR_ERR(iclk);
-               goto err3;
+               goto err;
        }
        fclk = clk_get(&pdev->dev, "uhpck");
        if (IS_ERR(fclk)) {
@@ -217,13 +210,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
  err4:
        clk_put(iclk);
 
- err3:
-       iounmap(hcd->regs);
-
- err2:
-       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-
- err1:
+ err:
        usb_put_hcd(hcd);
        return retval;
 }
@@ -246,8 +233,6 @@ static void usb_hcd_at91_remove(struct usb_hcd *hcd,
 {
        usb_remove_hcd(hcd);
        at91_stop_hc(pdev);
-       iounmap(hcd->regs);
-       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
        usb_put_hcd(hcd);
 
        if (IS_ENABLED(CONFIG_COMMON_CLK))